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Magnesium is present in natural sea water in a fairly high concentration (1350 - 1500 mg/L) and is an essential element of chlorophyll which is necessary for photosynthesis. Without photosynthesis plants, algae and coral would not be able to survive.

Magnesium also helps to maintain the correct combination of calcium concentration and alkalinity as it slows down the formation of calcium carbonate which can absorb many important trace elements within the aquarium.

Maintaining a correct magnesium concentration is therefore very important and is indirectly responsible for fast coral and calcareous algae growth by making it possible to maintain correct calcium and alkalinity figures.

Magnesium is depleted by algae growth and also by the use of excessive kalkwasser or by going far beyond natural calcium, alkalinity and pH values.

The Salifert Magnesium Profi-Test is easy to use and accurate with measurements in steps of 30 mg/L.

Results are not affected by strontium and calcium interference.

Can be used for marine water only.

Calcium and strontium will not interfere when their total concentration is between 200 and 650 ppm. This is mostly the case.

Warranty

This product seems to work well,there are several steps
that need followed,however it turned out simple to understand.
The results are easy to read,there you have it-until there are digital readers for magnesium,this will do.

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PABLO CALDERON from San Diego, CA UNITED STATES

09/22/2014

Experience Level: Intermediate

Best and easiest Mg test kit

Very satisfied with this kit. I have tried using RED SEA and other kits and they have been very diffucult to read. I highly recommend this test kit it is very easy to read.

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R from CERRITOS, CA UNITED STATES

09/22/2014

Experience Level: Intermediate

Good product

Easy to use and color change is obvious to see.

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PIOTR KULESZA from GLENVIEW, IL UNITED STATES

06/14/2013

Experience Level: Expert

Great Product

This kit is simple to use, easy to identify end point and helped get magnesium back on track. Thanks again

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EDWIN CASTRO from MIAMI, FL UNITED STATES

04/01/2013

Experience Level: Expert

good

precise is a good product

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Lou from ANAHEIM, CA UNITED STATES

02/11/2013

Experience Level: Intermediate

easy to use

seems pretty accurate and easy to use. comes with syringes that make things easy and keeps your hands dry. Works for me and is reasonably priced

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RYAN BAILEY from CONROE, TX UNITED STATES

02/01/2013

Experience Level: Expert

Great test kit

Although there are alot of components to this testing kit, it is extremely accurate. The instructions are very straight forward. I have no complaints about this product.

1 out of 1 found this review helpful

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STEFAN THOMPSON from Colorado Springs, CO UNITED ST

08/25/2012

Experience Level: Expert

Great

Works great. Used a red sea Mg test kit prior and no comparison. Easy to read, accurate and equal amounts of reagents so you won't run out of titrant before the other 2

1 out of 1 found this review helpful

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SCOTT PARKINS from NEWARK, DE UNITED STATES

04/22/2012

Experience Level: Intermediate

Quality, consistant, accurate

I purchased this kit after using another brand and being disappointed with it. I was happy with the results and had no trouble reading the plunger on the syringe. Make sure not to loose the instructions for this because you WILL need the chart to read the level of Mg. If the reagents were available seperately it would be icing on top but they are not. Not to worry, the price is good and accuracy does not suffer a bit, I found it better than the ELOS.

1 out of 1 found this review helpful

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BEN PETERSON from LOGAN, UT UNITED STATES

02/08/2012

Experience Level: Intermediate

Not even sure if this works

The directions are unclear and determining the exact amount of Mag based on the location of the plunger is less than exact. This is however the first mag test I have used to maybe they are all like this. Testing mag is a PITA with this test kit.